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IO_REG

BL_5V

VBUCK

H

G

U1301
J

U900
B F D
L4

W2 U1 R2

W1

N2 N1 M3 H2

F2 E1 B6 B5 B4

C E I A

8489233N10

WDOG

V1

GA_VCC

REF_REG

RF_5V_REG

E 398

A B C D E F

AUDIO_IN AUDIO_OUT INT_MIC HS_OUT_L (Alert L) ALERT - (Alert R) ALERT + (Alert R)

G H I J

HJACK_SPKR_R HJACK_SPKR_L HJACK_MIC CLK_32KHz

GSM SERVICE SUPPORT GROUP
Level 3 Signal Flow
E 398
Alexander Buehler, Michael Hansen

REVISIONS
2004.06.04

Rev. 1.0
8489233N10

Page 1 of 2

TX_CP

TX_MOD

J

I A

B4

B

D4

A4

U800 U700

E3

E

F
38 39

35

30 29 28 27

24 22

D5

B5

B8

D8

2 B9 A9

1

44 47

U150

A8

20 19 17 16 14 13

4

5

FL100

H G
29 27 25 23

D
12 15 16 25

4

U300

U50

21

6

C

8489233N10

BTIO_REG

BTRF_REG

AOC_DRIVE

E 398